SHELL

ubuntu bluetooth not working

#turn bluetooth on:
sudo /etc/init.d/bluetooth restart

# make it automatic on boot
sudo systemctl enable bluetooth

ubuntu bluetooth not working

# reinstall bluetooth
sudo apt --purge --reinstall install bluetooth bluez blueman pulseaudio pulseaudio-module-bluetooth

# at
sudo nano /etc/pulse/default.pa

# add load-module module-bluez5-discover

# then
sudo killall pulseaudio
pulseaudio --start
sudo systemctl restart bluetooth.service

ubuntu microphone does not work

rm -rf ~/.config/pulse/
# Log out
# Log back in
# go to desktop settings/'sound'
# insert headphones
# Go to 'input' section
# Do microphone audio test on each available device

ubuntu bluetooth microphone not working

# Follow this link
https://kumarvinay.com/how-to-enable-bluetooth-headset-microphone-support-in-ubuntu-20-04/